第一步：找到apache启动命令：
[root@WAPBJ01 ~]# ps -ef|grep httpd
root 10575 1 0 19:45 ? 00:00:03 /usr/sbin/httpd -k start
myuser 15356 2982 0 Jan19 ? 00:00:00 /home/apache/bin/httpd -f /home/apache/conf/httpd.conf -k start
如果看到 httpd命令使用了-f选项，则可以直接得到配置文件目录。
如果httpd命令没有使用-f选项，如：
[root@WAPBJ01 ~]# ps -ef|grep httpd
root 10575 1 0 19:45 ? 00:00:03 /usr/sbin/httpd -k start
apache 10577 10575 0 19:45 ? 00:00:00 /usr/sbin/httpd -k start
apache 10583 10575 0 19:45 ? 00:00:00 /usr/sbin/httpd -k start
apache 10584 10575 0 19:45 ? 00:00:00 /usr/sbin/httpd -k start
apache 10587 10575 0 19:45 ? 00:00:00 /usr/sbin/httpd -k start
apache 10590 10575 0 19:45 ? 00:00:00 /usr/sbin/httpd -k start
apache 10591 10575 0 19:45 ? 00:00:00 /usr/sbin/httpd -k start
则执行第二步。
第二步：执行httpd -S命令，找出配置文件路径
[root@WAPBJ01 ~]# /usr/sbin/httpd -S
VirtualHost configuration:211.157.8.76:80 is a NameVirtualHost
default server wap.wapwu.com (/etc/httpd/conf/httpd.conf:1041)
port 80 namevhost wap.wapwu.com (/etc/httpd/conf/httpd.conf:1041)
port 80 namevhost wapu.wapwu.com (/etc/httpd/conf/httpd.conf:1052)
wildcard NameVirtualHosts and _default_ servers:
_default_:443 211.157.8.76 (/etc/httpd/conf.d/ssl.conf:88)
Syntax OK
[root@WAPBJ01 ~]#
从apache输出的日志信息中可以看到配置文件是在/etc/httpd/conf/ 目录下。